Microsoft Research unveils SwordFight, which utilizes “a hardware localization technology that enables you to play a multi-player sword fighting game using only smartphones.” Best of all, Microsoft’s FAR technology is incredibly fast and can be used in real-time for other applications, in addition to games. Continue reading for a video and more information.

To play SwordFight, two players aim their phones at each other and move aiming for each other’s handset. If a player hits within six inches of their opponent’s handset, the opponent loses a point. It’s all measured via the phone’s accelerometer and digital compass, and the addition of the new little chirp allows the phones to know how close they got to each other.

[Sources 1 | 2]